P1497 KIA: EGR STEPPER MOTOR MALFUNCTION
P1497 MAZDA: EGR VALVE MOTOR COIL 2 OPEN OR SHORT
P1497 SUBARU: EGR SIGNAL LINE 3 HIGH CIRCUIT
POST UPDATED IN February, 2023
P1497 KIA: EGR STEPPER MOTOR MALFUNCTION
P1497 MAZDA: EGR VALVE MOTOR COIL 2 OPEN OR SHORT
P1497 SUBARU: EGR SIGNAL LINE 3 HIGH CIRCUIT
In order to reduce the number of harmful gases that an engine expels into the atmosphere, manufacturers employ various strategies or systems. Among the major pollutants produced by vehicles is NOx, a compound that is produced in the combustion chamber once nitrogen and oxygen reach high temperatures. To reduce as many emissions of this pollutant as possible, the Exhaust Gas Recirculation System (EGR) is used.
Included in the EGR is a valve that controls the passage of the gases. This valve opens and closes according to conditions and thus allows or denies the passage of gases. The system valve is monitored by the PCM (Powertrain Control Module) employing a sensor that detects the elevation, a value that is previously stored in the controller.
When the P1497 OBDII diagnostic code is set on certain vehicles, it is due to a problem in the EGR system. Since it is a manufacturer-specific code, it is recommended to consult the source of information.
The reasons for storing the DTC P1497 OBD2 code are as follows:
The steps to troubleshoot the P1497 OBDII fault code are: